<template>
  <div>
    <div class="search">
      <input v-model="keyword" class="search-input" type="text" placeholder="输入城市名或拼音">
    </div>
    <div class="search-content"
         ref="search"
         v-show="keyword"
    >
      <ul>
        <li class="search-item border-bottom"
            v-for="item of list"
            :key="item.id"
            @click="handleCityClick(item.name)"
        >
          {{item.name}}
        </li>
        <li class="search-item border-bottom" v-show="hasNoData">没有找到匹配城市</li>
      </ul>
    </div>
  </div>
</template>

<script>
  import Bscroll from 'better-scroll'
  import {mapMutations} from "vuex";
  export default {
    name: "CitySearch",
    data(){
      return{
        keyword:'',
        list:[]
      }
    },
    props:{
      cities:Object
    },
    computed:{
      hasNoData(){
        return !this.list.length
      }
    },
    methods:{
      handleCityClick(city){
        // this.$store.commit('changeCity',city)
        this.changeCity(city)
        this.$router.push('/')
      },
      ...mapMutations(['changeCity'])
    },
    watch:{
      keyword(){
        if (this.timer){
          clearTimeout(this.timer)
        }
        if (!this.keyword){
          this.list = []
          return
        }
        this.timer = setTimeout(()=>{
          const result = []
          for (let i in this.cities){
            this.cities[i].forEach((value)=>{
              if (value.spell.indexOf(this.keyword) > -1 ||
                  value.name.indexOf(this.keyword) > -1){
                result.push(value)
              }
            })
          }
          this.list = result
        },100)
      }
    },
    mounted() {
      this.scroll = new Bscroll(this.$refs.search)
    }
  }
</script>

<style lang="stylus" scoped>
  @import "~styles/variable.styl"
  .search
    height .72rem
    padding .1rem
    background: $bgColor
    .search-input
      box-sizing border-box
      width 100%
      text-align center
      border-radius .06rem
      line-height .62rem
      height .62rem
      color #666
      padding 0 .1rem
  .search-content
    position absolute
    overflow hidden
    background: #eee
    top 1.58rem
    right 0
    bottom 0
    left  0
    z-index 1
    .search-item
      line-height .62rem
      padding-left .2rem
      color #666
      background: #ffffff

</style>
